Scientists have found the answer to the eternal question of what came first - the egg or the chicken.

After analyzing 51 fossil and 29 modern types of chickens, including oviparous and viviparous, scientists concluded that as a result, the chicken appeared first. Studies have shown that the ancient ancestors of chickens were reptiles that existed long before the time of the dinosaurs, and they practiced live birth. The appearance of the egg as a shell occurred later, as a result of evolutionary processes, and played an important role in the survival of offspring.